No pay till your first contract, outwith travel expenses
You dont get treated with very much respect by account managers. Most.
There is no guarantee you'll get a contract soon after your training. Bit of advice, don't start between late september & November.
You don't get a say in the jobs you interview for or where you get placed. Unless you have a good reason i.e. a child.
There is no guarantee the role you sign up for is what you'll end up doing.